Create third dictionary to preserve current functionality and add fil…

…e there

awx/api/serializers.py

@@ -120,7 +120,7 @@
 )
 
 from awx.main.utils.filters import SmartFilter
-from awx.main.utils.plugins import compute_cloud_inventory_sources
+from awx.main.utils.plugins import return_inventory_source_options
 from awx.main.utils.named_url_graph import reset_counters
 from awx.main.scheduler.task_manager_models import TaskManagerModels
 from awx.main.redact import UriCleaner, REPLACE_STR
@@ -2326,7 +2326,7 @@ class Meta:
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         if 'source' in self.fields:
-            self.fields['source'].choices = compute_cloud_inventory_sources() or {}
+            self.fields['source'].choices = return_inventory_source_options() or {}
 
     def get_related(self, obj):
         res = super(InventorySourceOptionsSerializer, self).get_related(obj)

awx/main/utils/plugins.py

@@ -30,12 +30,26 @@ def discover_available_cloud_provider_plugin_names() -> list[str]:
 @cache
 def compute_cloud_inventory_sources() -> dict[str, str]:
     """Return a dictionary of cloud provider plugin names
-    available plus source control management.
+    available plus source control management and constructed.
 
     :returns: Dictionary of plugin cloud names plus source control.
     :rtype: dict[str, str]
     """
 
     plugins = discover_available_cloud_provider_plugin_names()
 
-    return dict(zip(plugins, plugins), file='file', scm='scm', constructed='constructed')
+    return dict(zip(plugins, plugins), scm='scm', constructed='constructed')
+
+
+@cache
+def return_inventory_source_options() -> dict[str, str]:
+    """Return a dictionary of cloud provider plugin names
+    plus file. File needed to be separate since it is needs to be consumed directly
+    by the serializer.
+
+    :returns: Dictionary of plugin cloud names plus source control.
+    :rtype: dict[str, str]
+    """
+    plugins = compute_cloud_inventory_sources()
+
+    return dict(zip(plugins, plugins)) | dict(file='file')